The Slonimer Rebbe describes the power of a Jewish Sigh, value of prayers and requests without words, galus, geulah, exil redemption, Egypt is the exile of speech and how a sigh can open the gates of redemption just when all hope seems lost, Shabbos is geulah from the galus of the weekday, Why do we say Hodu Tehillim 107 on Erev Shabbos.